What temperature and humidity does a corn snake need?
This is the single most important number in corn snake care. Warm side 85–88°F (29–31°C), cool side 75–80°F (24–27°C), with humidity around 40–50%. Everything else — appetite, shedding, activity — follows from getting this right.
Target temperature
- Warm side / basking
- Warm side 85–88°F (29–31°C)
- Cool side
- cool side 75–80°F (24–27°C)
- Humidity
- 40–50%
- Lighting
- Low UVB optional; clear day/night cycle
Why a gradient matters more than one number
A corn snake cannot choose a temperature if you only give it one. Provide a warm end and a cool end so it can move between them — that behaviour is how it regulates its own body temperature. Measure both ends with a digital probe; the stick-on dial gauges sold in pet shops are unreliable.
How to control it
- Heat: use a thermostatically controlled heat source. An unregulated heat source is the single most common cause of burns in captive reptiles.
- Humidity: adjust substrate, water surface area and ventilation rather than just misting. Misting spikes humidity briefly and then drops it again.
- Measurement: digital probes at animal level, not on the wall above it.
- Night: most species tolerate a night drop. Check what your species needs rather than heating 24 hours a day.
Species target: Warm side 85–88°F (29–31°C), cool side 75–80°F (24–27°C), humidity 40–50%. Low UVB optional; clear day/night cycle.
Signs your numbers are off
- Too cold: a corn snake that stops eating, stays hidden and becomes lethargic.
- Too hot: an animal that permanently sits at the cool end, gapes or avoids the basking spot entirely.
- Humidity wrong: shedding problems, or a constantly damp enclosure that never dries out.
Related questions
How often do you feed a corn snake?
Every 5–7 days as a hatchling, every 7–10 days as a juvenile, and every 10–14 days as an adult, with prey sized to the thickest part of the body.
Do corn snakes need humidity?
Moderate — around 40–50%. Raise it slightly or provide a humid hide during a shed. Too damp for too long causes scale and respiratory problems.
Can corn snakes live together?
No. Cohabitation adds stress, competition and disease risk with no benefit to the animals. House them separately.
Not veterinary advice. This guide covers husbandry. If your corn snake is injured, off food unusually long, or behaving abnormally, contact a veterinarian.